Title :
A Novel Folded Waveguide for V-Band TWT
Author :
Mingliang Liao ; Yanyu Wei ; Hailong Wang ; Jin Xu ; Yang Liu ; Yubin Gong ; Wenxiang Wang ; Gun-Sik Park
Author_Institution :
Nat. Key Lab. of Sci. & Technol. on Vacuum Electron., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A V-band traveling-wave tube (TWT) prevails nowadays as an amplifier device for satellite communication and electronic countermeasures. The folded waveguide (FW) is a promising slow-wave structure for V-band TWT with advantages of high power and considerable bandwidth. A novel FW periodically loaded with right-angled rectangular grooves is analyzed for the purpose of gaining higher power within a shorter circuit. The radio-frequency characteristics are investigated by numerical simulation, and the nonlinear large-signal performance of such a TWT is analyzed by a 3D particle-in-cell code MAGIC. Compared with normal circuits, a relatively higher continuous-wave power (60-80 W) and a similar bandwidth (5 GHz) at V-band are predicted by simulation. Meanwhile, the novel circuit is also shorter when the output power becomes saturated. It, therefore, will favor the miniaturized design of a broadband and high-power V-band TWT.
Keywords :
amplifiers; optical communication equipment; optical waveguides; satellite communication; 3D particle-in-cell code MAGIC; V-band TWT; amplifier device; bandwidth 5 GHz; electronic countermeasures; folded waveguide; nonlinear large-signal performance; numerical simulation; output power; power 60 W to 80 W; radiofrequency characteristics; right-angled rectangular grooves; satellite communication; slow-wave structure; traveling-wave tube; Bandwidth; Electron tubes; Impedance; Microwave generation; Power generation; Vacuum electronics; Novel folded waveguide (FW); V-band TWT; V-band TWT.;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2015.2490119
